However, varieties with a single resistance gene may lose their resistance if a new virus strain can overcome the Stv-bi, it is necessary to identify and exploit new genetic resources which are resistant to RSV in rice breeding programs.

• 目前主要是通过传统的杂交育种来选育抗病新品种,但效率较低而且抗病鉴定也比较困难,而利用现代的基因工程技术来快速改良高产优质但感病的水稻品种则具有广阔的应用前景。 所以本研究围绕条纹叶枯病抗性育种开展了两个方面的研究:一是寻找并定位新的抗病基因;